Does it matter if its structured or clean? If someone can't have a discussion/debate on any topic without someone pulling down their pants and pooping on the floor to where the others who ARE discussing and debating civilly are actually leaving....then why bother to open the topic to begin with? They will just find another cafe that serves donuts and tea. Not beer and temper tantrums and poop all over the floor.
If those creating these threads are provided a means to maintain order in their threads, it will cut down the level of disruption significantly. All it would take is a few clicks.
On the leaving part, it wouldn't be good to have them leave this site. If we make this area of USMB that encourages structured, civil discussion with the addition of granting the OP the ability to thread-ban disruptive members, it would create an atmosphere conducive to worthwhile discussion. It would help in attracting and maintaining people who don't like the toxic chaos found in some of the political threads elsewhere on this forum.